Toroidal coil winding apparatus



Jan. 12, 1965 R. FAHRBACH 3,165,273

TOROIDAL con. WINDING APPARATUS Original Filed May 31, 1962 2Sheets-Sheet 1 F'Kll INVENTOR. R UDOLF FA HQBACH Jan. 12, 1965 R.FAHRBAQH TOROIDAL COIL WINDING APPARATUS 2 Sheets-Sheet 2 Original FiledMay 31, 1962 FIG.3

1N VENTOR. euoou FAHRBACH CW W.

"rowers.

. Q 3,165,273 ronomAL con. WINDKNG APPARATUS Rudolf Fahrbaeh, Union, Ni,assignor to Universal Manufacturing Company, End, lrvington, N..,acorporationof New Jersey r Continuation of appiieation Serx'No. 198,872,May 31, 1962. This appiicatien'l /layfi, 1964, Ser. No. 357,4?50

'2 Claims. (Cl. 242---4.)

This application-is a Continuation ofapplication Serial No. 198,872;filed *May 31,-, 1962, now abandoned;

This invention relates to winding and reeling apparatus and is directedmore particularly tothe ring winding of toroidal. coils. l "'lhewindingof toroidal coils has long been known. For many'years, all apparatusffordoing'th-is work, other States,

Patented Jan. 12, less rotate the latter from a belt driven by a primemover motor. I

Thetoroidal coil winding head of this invention embodies a casting onwhich is supported a plurality of shuttle ring supporting and drivingrolls. This casting has a tubular neck provided at its free end withcoupling means engageable with the coupling means of the sleeve of: thepower transmitting unit to rigidly detachably support the winding head,solely on said power transmitting unit. The drive shaft of the windinghead extends through said tubular neck and terminates in a thanaccording to this,.-i n'vention, employed a unitary, w

integrated assembly of power and windingelements which were individuallyand'separately. supported on and affixed to the frame'of the windingmachine; Each 'of these assemblies, in toto, was so constituted that itwas capable of winding only a limited range of coil sizes or a -par-'ticular form'of coiljwindlngl, When a different size'or type of coil,outside theirangev of the machine, was re-v quired,-it-became necessaryto remove the winding head which happened who in the machine andsubstitute therefor a different winding head capable of carryingfout thenewly desired operation. Such-a change-over required;

that-the winding head part of the, assembly be removed fromtheremaining'parts of. the machine. Thisentailed unbolting of thewinding head. from. the frame of the machine, a disconnection of thepower drive therefrom; and a reassembly of the par-ts with anappropriate winding head, followed by a'realinement'andthe'establishment of a new connection between the prime mover and the'new'windinghead. T

I The art of. winding toroidal coils, particularly-when clutchtodetachably engage the clutchof the power transmitting shaft of the saidunit. By so mounting and supporting the winding head solely on the powertrans-j mitting unit, all direct'supportin'g connections between i; saidhead and theframe of the machine are; entirely eliminated, The laboriousand time consuming bolting These? fixed and rotatable parts are providedwith shaped innerorifices in'to which-a conformed male member, on

a changeable winding head, is adapted to be received andv retained. :Onassembly, the male member is, inserted first into and through "therotatable part of the receptacle and thence into the statio nary part ofsaid receptacle. Therewire of small gauge -is'employed,;requiresaccurate assembly ofthe parts in order that the machine will functionsmoothly. Consequently, great ca'reliad to be exercised in reassemblingthe"parts;dur ing change-over, in order i that all the criticalrequirements of such operation would- 'b'e-performed. This requiredconsiderable time for'shutdown of the machine before theinew windinghead wasready for operation. In practice, it was not uncommon that sucha change-over required a shut-down of an hour or more and had to'jbecarried. out by skilled operatives.

The primary object of this invention is to so .constitute toroidal coilwinding machines that change-over of. winding heads may be accuratelyaccomplished 'by comparatively unskilled laborin less than .a moment, sothat shut-down" for any prolonged period may be eliminated and noappreciable delay in 'production outputof the machine may be obtained. 7

The fundamental concept of this invention involves the use of a novelbasal power transmission unit forming an inherent component part of themachine and to which separate, transitory, individual winding heads maybe selectively coupled without requiring any time consuming alignmentprocedure, whereby different sized winding heads may be rapidlyinterchanged as required during production with a consequent reductionin downtime.

The novel basal power transmission unit of this invention comprises astandard, permanently mounted in fixed position on the frame of themachine and immovably supporting a sleeve which extends beyond one endof the standard and is there proivded with coupling means. A rotatablepower transmitting shaft extends through said sleeve and is provided onone end with a clutch, there being a pulley fixed to said powertransmitting shaft to after", the rotatable part is rotatedto lock themale mem ber within the inner stationary part.

The invention-will hereinafter be described inreference to theaccompanying drawings, in which: i

" FIG. lis a perspective view of a toroidal coil windingmachine-embodying the invention, a portion of the apparatus being brokenawayto illustrate its action;

FIG. -2 is a longitudinal cross-sectional view of coupling mechanismstaken along: ine '2'2-of FIG. l;

11 FIG. 3 is a longitudinal cross-sectional viewof the.membersillustrated in FIG- 2 in mechanically coupled relationship; and

'FIG. 4 is a transversesectional view-taken along line 4-4 of FIG. 3.

In the dra'wings, the unitgenerally indicated. at 1 is the powertransmission unit, which is permanently affixed to the chassis or frame2 of acoil winding machine.

The supporting standard 3 of the unit is permanently, rigidly fastenedto the frame "2 as by studbolts 4 and nuts 5. The upper cylindricalportion of-the standard a encloses a tubular sleeve 6a,.locked inposition by a spline 6b andiset screwsgec. :iOne end of the sleeveextends beyond the standardvand has a radially'enlarged, cylindrical,cup shaped end 6, forming therein a re ceptacle 14.

Within the sleeve 6a, a power transmitting shaft '7 is journaled forrotation in bearings 8 and 9. One end of this shaft 7 has driving means,in this case a pulley 16 having a handwheel ltla. The pulley is adaptedto receive a belt, driven by a prime mover motor 12.

Within the internal peripheral wall of the receptacle 14 is a pair ofkeyways 13 which. project radially therefrom. The outer peripheralsurface of the enlarged cup shaped head 6 is threaded, as at 6a, toreceive an internally threaded locking ring 15, one end of which is in--ternally flanged, as at 15a, to leave a central. circular opening 37a.

to and register with the keyways 13.

In the flange 15a, are formed keyways 17 adapted, in one rotary positionof the ring, to conform The interchangeable winding head, of which onlyone form'is illustrated, is generally indicated at 18. Itcom prises acasting 19 having a tubular neck 20 to enclose driven shaft 21. Thecasting 19 may contain. suitable 7 gears, or alternatively a pulley-beltsystem, to supply rotational energy from thefdriven shaft 21 to drivingrollers 22'which provide driving energy for-the circular shuttle 23,-which these rollers support.. The shuttle 23 carries the wire to bewound on the toroid, not illustrated. The toroid is adapted to berotatably supported on the three horizontal driving rollers 25. by whichit is adapted to be rotated as the wire is wound thereon by therevolving shuttle.

The outer end of the tubular neck 20 of the'windinghead casting 1-9 isprovided with integral radial male projecting lugs or keys 26. The shapeof these lugs or keys 26'is the converse of the shape of the keyways 13:and, .17 in the receptacle 14 and locking ring 15 of the powertransmission unit 1. The driven. shaft 21 has a centrally projectingflat blade 27 adaptedto be'received in a slot 28in the endof the powertransmitting shaft 7 of the power transmission unit 1.

In operative use, the selected windinghead. 18 is guided towards thepower transmission unit 1 so as to pass the winding head'lugs orkeys 26through thekeyways 17 of thelocking ring 15 into thekeyways 13 of thecupped end of the sleeve 6a.

The power transmissionfshaft l7ll1aving been oriented Q 14 .1 a tubularneck n'gid with said casting and having at its free end coupling meansengageable' with thecoupling means, of the ower transmission 1 unit torigidly and p detachably support said winding head solely on the basalpower transmissiongunit, and 'a driven shaft rotatably supported withinthe casting of the winding head to drive the shuttle ring supportingrolls; the free-end: of; said. driven shaft having a clutch memberengageable with. the

' clutch member of the power transmitting shaft to drive,

said driven shaft from said power transmitting shaft.

2..A"toroidal co.il winding apparatuscomprising: an apparatus, frame, abasal power. transmission unit rigidly and permanently-mounted on saidframe and including a hollowcylinder, a;tubul'a-r sleeve positionedlongitudinally within said" cylinder and locked against rotationtherein, one end of said sleeveextending beyond one end of the hollowcylinder and having "a radially enlarged cupped portion the outersurface of the peripheral wallof 'whichis threaded and the. innersurfaceof which wall is provided with annularly 'spaced apart keyways, athreaded locking ring engaged with thethreads er the cupped'portion ofthe sleeve and having on its'inner. pe-

riphery keyways adapted through rotation of the locking 1 ring to moveinto and out of registration with; the keyways ofthe cupped portion ofthe sleeve, a power'transmitting shaft extending through and"rotatablysupported so that the slot 28' is :aligned with the blade 27,the T winding head is urged against the power transmission unituntilfully seated in the latter. The lockingring'15 'is thereupon rotated bythe handle 16 until the key slots '17 of the locking ring 15 are. outofalignment with the key slots 13 of the part 6 as illustrated .in FIG. 4.'As

the ring 15 is rotated to lock lugs 26' to the power unit, I the ring15.;moves, by the action of the threads, axially leftwardly inthedrawings, locking the lugs 26 in place behind flange 15a. Theinterchangeable winding head is thus securely locked to thepower-transmission unit 1 andItlie' coil winding operation may becommenced.

When it'is desired' to make the next change-over the wiring head-at:that time associated with the power transmission. unit may be.releasedby merely rotating the lock- 'ing ring into a position to bringthe'ke'yways 13 and 17 into registration, whereupon the winding head maybe manually withdrawn from. the transmission unit. 'The next unit whichis to be coupled to the transmission 'unit' may then be associatedtherewith by'repeating" the assem bly operations hereinbefore described.1 Having; thus fully described the. invention, what I claim as new anddesire to secure by Letters Patent isz -1.- A toroidal coil windingapparatus having a frame, a basal power transmission :unit rigidly andpermanently attached to said frame, coupling means carried by said powertransmission unit, anda power transmitting shaft rotatably mounted onsaid unit with a clutch member" on the end of said shaft, in combinationwith a transitory toroidal coil winding head embodying a castingcarrying I a plurality of shuttle ring supporting and driving rolls,

within said sleeve, one end" of said transmission shaft projecting'intothe cupped portion :and' slotted while the other end. of saidshaftiprojects beyond theopposit'e end of the sleeve and has a drivingpulley affixed thereto,

and a'drive. motor having a belt connection with said' pulley, incombination with a toroidal coil winding head embodying a castingcarrying a plurality of shuttle. ring supporting "and driving rolls, atubular neck rigid with said casting and having at. its free endradiallugs movable into the'keyways in the cupped. portion of the sleeve whenthe keyways of; the. sleeve'and locking ring are in 7 registration, to.be locked. to the power, transmissionhead when the locking ring isrotated'tomove thekeyways of said'locking ring out of register withthose. of the. cupped V portion','whereby the frame of the'windingheadis: rigidly casting of thewinding head to drive the'shuttle ringsupand .detachably" supported solely on the transmission head,andadriven shaft rotatably supported within thev portingirolls, the freeend of said driven shaft having a bladeextending into the 'slot of the.power transmitting shaftv when the winding head is. locked to andsupported on the power transmission head.

References Cited by the Examinerv UNITED STATES PATENTS MERVIN STEIN,Primary Examiner.

1. A TOROIDAL COIL WINDING APPARATUS HAVING A FRAME, A BASAL POWERTRANSMISSION UNIT RIGIDLY AND PERMANENTLY ATTACHED TO SAID FRAME,COUPLING MEANS CARRIED BY SAID POWER TRANSMISSION UNIT, AND A POWERTRANSMITTING SHAFT ROTATABLY MOUNTED ON SAID UNIT WITH A CLUTCH MEMBERON THE END OF SAID SHAFT, IN COMBINATION WITH A TRANSITORY TOROIDAL COILWINDING HEAD EMBODYING A CASTING CARRYING A PLURALITY OF SHUTTLE RINGSUPPORTING AND DRIVING ROLLS, A TUBULAR NECK RIGID WITH SAID CASTING ANDHAVING AT ITS FREE END COUPLING MEANS ENGAGEABLE WITH THE COUPLING MEANSOF THE POWER TRANSMISSION UNIT TO RIGIDLY AND DETACHABLY SUPPORT SAIDWINDING HEAD SOLELY ON THE BASAL POWER TRANSMISSION UNIT, AND A DRIVENSHAFT ROTATABLY SUPPORTED WITHIN THE CASTING OF THE WINDING HEAD TODRIVE THE SHUTTLE RING SUPPORTING ROLLS, THE FREE END OF SAID DRIVENSHAFT HAVING A CLUTCH MEMBER ENGAGEABLE WITH THE CLUTCH MEMBER OF THEPOWER TRANSMITTING SHAFT TO DRIVE SAID DRIVEN SHAFT FROM SAID POWERTRANSMITTING SHAFT.